Chancy’s Fish Camp Flathead Area Fishing Report — July 31, 2026
Summer fishing in the Flathead region is hitting its stride, and Chancy’s Fish Camp has the full rundown on what’s biting, where, and how to get tight lines before the season turns. From Flathead Lake’s massive whitefish bite to pike in the sloughs and walleye at Lake Francis, there’s plenty of action spread across northwest Montana right now. Here’s everything you need to know heading into August.
Flathead Lake
Whitefish — The Bite Is On
Whitefish bite is full swing!!! All reports are saying 50 to 60′ water seem to be best depth to look for them. North end try Sommers Bay, Hatchery Bay, Caroline Pt, Delta, Woods Bay and West Shore State Park area to Painted Rocks. Fish up on north running smaller in size 1 to 3lbs.
South End try Skiddo Bay, Yellow Bay to Blue Bay, Finley point, Narrows, Rollins area, Shelter And Cedar Island, Elmo Bay, Big arm and near Walstad.
Fish on south average bigger 2 to 5lbs this year.
JT Tackle disco perch have been great. Zimmer Rattle Dzastors are working well also. Mr.Riley jigs and Bone Collector jigs along with Pete’s Whitefish slayer are all doing well. Sizes are 3/8 up to 3/4 Oz all usually green color variation to match the perch hatch. Bring a good rubber coated net, a large cooler with lots of cold ice the whitefish get soft very quickly be sure to ice them down well.
Mountain whitefish and lake whitefish are both common in Flathead Lake, and late July into August is prime time to target them as they school up in mid-depth zones — typically between 40 and 70 feet — chasing baitfish and invertebrates near the thermocline. The 50 to 60-foot zone mentioned in this report puts you right in the sweet spot where water temperatures become more comfortable for the fish after the warm surface layer of midsummer.
The size difference between north and south end fish is worth paying attention to. The south end of Flathead Lake is deeper overall, with larger and more structurally complex areas that allow fish to grow bigger before getting pressured. If you’re targeting a trophy whitefish or want heavier fish for the smoker, make the run south. If you’re closer to Polson or Bigfork and want numbers, the north end will keep your rod busy.
When it comes to terminal tackle, the green color variations that are producing right now make perfect sense — the perch hatch is in full effect, and whitefish are keying on small perch-colored baitfish. Matching that profile with a 3/8 to 3/4 oz jig gives you enough weight to reach the target depth efficiently, especially in any breeze or drift. A rubber-coated net is a must — it protects the fish’s slime coat if you’re doing any catch-and-release, and it’s gentler on your lure hooks. And heed the advice about icing fish immediately: whitefish flesh degrades faster than almost any other freshwater species in Montana, so a dedicated cooler packed with plenty of ice is non-negotiable for table quality.
Lake Trout
Lake trout will be mixed in with the whitefish try casting or jigging large tube baits or swimbaits in same depth ranges. Trolling try 120 to 150′ not to far off from the whitefish spots. Big flatfish trolled slow on bottom work well.
Lake trout — or mackinaw — in Flathead Lake are a year-round pursuit, but summer fishing requires getting deep. Montana Fish, Wildlife & Parks (FWP) has historically encouraged heavy harvest of lake trout from Flathead Lake as part of ongoing efforts to protect native bull trout and westslope cutthroat populations, so there’s rarely a reason to release a legal laker. Always check current FWP regulations for any special provisions or slot limits before you head out. When trolling in the 120 to 150-foot range, downriggers are the most effective way to maintain exact depth control. Flat-fish lures trolled slowly near the bottom have a wide wobble that triggers strikes from fish holding tight to structure.
Smallmouth Bass
Smallmouth bass action also going good on the lake, try ned rigs, swimbaits, tubejigs casting along boulder or deep points. Dock fishing can also be good for them.
Flathead Lake’s rocky shoreline and boulder-strewn points create ideal smallmouth habitat, and the warming water temperatures of late July push bass into predictable feeding patterns. Early morning and late evening are peak windows, but midday fishing along shaded docks or deeper points (12 to 20 feet) can be productive throughout the day. A ned rig — a small mushroom-headed jig with a stub of soft plastic — is hard to beat for finesse presentations, while a swimbait on a light jighead covers water faster when you’re searching for active fish.
Flathead River and Forks
North fork fishing well, try small spinners and spoons. Gold or white colors, flys hoppers, ants, humpys or purple haze. Main steam lower end between prestine and old steel producing little bigger fish.
The North Fork of the Flathead forms the western boundary of Glacier National Park, making it one of the most scenic and wild river corridors in Montana. This time of year, terrestrial fly patterns like hoppers, ants, and beetles become increasingly effective as insects fall from streamside vegetation into the current. The Purple Haze and Humpy are both excellent attractor patterns when fish aren’t keying on a specific hatch — they’re high-floating, easy to see, and buggy enough to draw strikes. For spin anglers, gold or white small spinners and spoons imitate small minnows and work well in the clearer water typical of the North Fork. The lower main stem, between Prestin and the old steel bridge, tends to hold larger fish because it aggregates fish from multiple tributaries and offers deeper holding water.
Swan Lake
South and north end lake producing good pike very early mornings or late evenings. Troll shoreline with small spoons or flicker shad for rainbows.
Swan Lake is a beautiful, often-overlooked fishery tucked in the Swan Valley between the Mission Mountains and the Swan Range. Northern pike in Swan tend to hug shallow, vegetated areas near the north and south ends of the lake, making early and late presentations along weed edges and reed banks the most effective approach. Big flashy jerkbaits or spinnerbaits can also draw explosive surface strikes in low-light conditions. For rainbows, trolling with small spoons or flicker shads along the shoreline transitions gives you the best of both worlds — covering water and staying in the zone where rainbows cruise.
Thompson Lakes — Middle and Lower
Producing good salmon early mornings. Troll small dodgers with pink or orange hoochies. Middle fish are up to 20″ this year.
McGregor lake still producing good number of lake trout jigging 120 to 150′ water small glo grubs from zimmer working well. Try shorlines for smallmouth bass.
Kokanee salmon in the Thompson Lakes system are a summer staple for northwest Montana anglers. Kokanee are landlocked sockeye salmon that school tightly and can be finicky — but when you find them and dial in the presentation, the action can be fast and furious. Dodger-and-hoochie rigs work because the dodger provides both flash and action to the trailing hoochie, which mimics a small squid or shrimp. Pink and orange are classic kokanee colors, particularly effective in clear lake conditions. Early morning is prime because kokanee tend to move shallower in low-light conditions before retreating to cooler depths as the sun climbs.
McGregor Lake’s lake trout fishery responds well to vertical jigging with small glo-style grubs in the deep zones. The glow finish is particularly effective when jigging deep water where light penetration is limited.
Flathead River Sloughs
Early mornings casting big jerkbaits or swim baits producing nice pike. Late evenings crappie bite picks up in Fennon and Church. Good largemouth action in those 2 also.
The slough system along the lower Flathead River is some of the most underrated warmwater fishing in northwest Montana. These backwater areas warm up faster than the main river, producing exceptional habitat for pike, largemouth bass, and crappie throughout summer. For pike, large jerkbaits worked with an erratic twitch-pause retrieve trigger the predatory response — the pause is often when the strike comes. Evening crappie action in Fennon and Church Sloughs is a great option for families or anglers looking for consistent numbers; a small hair jig or tube fished under a slip float near submerged timber is a reliable setup.
Crystal Lake
Early mornings been good for smaller salmon few nice perch.
Crystal Lake is a smaller mountain-adjacent fishery that’s worth a morning trip if you’re in the area. Kokanee and perch both respond well to small spoons and spinners fished early. Perch in particular are a fun target — they school up predictably and are outstanding table fare when cleaned fresh.
Lower Stillwater River
Good pike action 2 to 5lb fish, look for bigger perch up on west end 15 to 20′ water.
The lower Stillwater offers an accessible and productive pike fishery for anglers who don’t want to deal with the larger lakes. Fish in the 2 to 5-pound range are ideal for the table, and the perch bite on the west end in 15 to 20 feet is worth targeting with small jigging spoons or drop-shot rigs tipped with a small paddle tail. Perch this size are excellent eating and a great option to put in the cooler alongside your whitefish.
Noxon Reservoir
Bass action has been very good lots of nice smallmouth and large mouth. Walleye bite has been picking up very well also. Try 20 to 30 water near Vermilion and down toward the dam off the Islands and deeper points.
Noxon Reservoir on the Clark Fork River is one of western Montana’s top warmwater fisheries and doesn’t get nearly the pressure it deserves. The combination of smallmouth, largemouth, and walleye in a single fishery makes it worth the drive for any angler willing to explore. Walleye in the 20 to 30-foot zone near structure respond well to blade baits, crawler harnesses, or jigging with shad-colored soft plastics. Work the transition points from shallower flats to deeper water — that’s where walleye set up to ambush prey moving between depths.
High Mountain Lakes
All your high mountain lakes usually fish very well this time of year. Try small spoons and spinners or small dry flys work well.
Montana’s high mountain lakes are at or near peak fishing condition right now. Snow has long since melted at most elevations, trails are open, and the fish — typically cutthroat trout, brook trout, or grayling depending on drainage — are actively feeding. Pack light, bring a small selection of size 12 to 16 dry flies (elk hair caddis, parachute adams, and stimulators cover most situations), and a handful of small kastmasters or panther martins for spin fishing. Afternoon thunderstorms are common in August at elevation, so plan your trips for early mornings and be prepared to get off the water or above treeline early.
Holter Reservoir and Lake Francis — Worth the Drive
If your wanting to travel a bit try Holter Reservoir for the giant salmon up to 6lbs. Trolling near the dam has been productive.
Walleye bite has been good with fish in that 16 to 22″ range. There good water in it this year so fishing has been productive.
Holter Reservoir on the Missouri River below Great Falls is known for producing trophy-class kokanee salmon, and 6-pound fish represent truly exceptional specimens. Trolling near the dam structure concentrates fish and allows you to work a consistent depth profile. If you’re making the trip, bring a full spread of kokanee gear — dodgers, wedding rings, and scented hoochies — and plan to experiment with depth until you locate the active schools.
Lake Francis near Valier in north-central Montana is a sleeper walleye fishery that’s putting out quality fish in the 16 to 22-inch range. Good water levels this year mean more consistent fish distribution across the lake rather than fish being stacked into limited areas. Walleye in that size class are prime eating, and with the bite described as strong, it’s a great late-summer option if you’re in the area or willing to make the run.
Final Thoughts — Make the Most of August
Get out and enjoy our last month of summer!!
Tight lines from Chancy’s Fish Camp!!
August is the final full month of Montana summer fishing before the season begins to shift — water temperatures will start to moderate, kokanee will begin their spawning color changes, and the overall character of the fishery transitions toward fall patterns. Right now, though, the fishing is as good as it gets across the Flathead region and beyond. Whether you’re targeting whitefish on the big lake, chasing pike in the sloughs, or hiking into a high mountain cutthroat lake, there’s something producing in nearly every corner of northwest Montana. Get out and take advantage of it — and as always, keep your fish cold, check current FWP regulations before you go, and tight lines from all of us at Chancy’s Fish Camp.
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